EdmondLeaf said:
Leaving highway my car lost regen at 60mph and we felt like someone hit us from the back, fortunately there was enough space and time to for regular brake to engage.
This is a long shot, but you did say "we", so I assume you had a passenger in the front seat. Twice my wife and I were driving on the freeway and it was suddenly as if the car was in neutral. Of course the feeling was not the same, but both your situation and ours felt like neutral. I figured it out in my case. My wife tried to open the console storage compartment, and pulled the wrong lever.
Yes, if you pull and then release the parking brake lever when at speed, the car appears to go into neutral for a few seconds.
p.s. I think I have my copilot trained now; it hasn't happened since last summer. But I am still not at all happy with the position of that parking brake lever.
Ray